Product Short Description
350070M is the simplified marking for official model 3500/70M, a high-precision dual-channel seismic velocity vibration monitoring module from Bently Nevada 3500 Series Machinery Protection Monitoring System. This module is specially designed for processing signals from seismic velocity sensors, acceleration sensors and casing vibration transducers. It receives conditioned analog vibration velocity signals, performs professional signal filtering, integration, amplitude calculation, alarm logic judgment and protection interlock output. It fully complies with API 670 4th Edition international standard
Description
Detailed Technical Specifications
| Parameter | Exact Specification |
|---|---|
| Product Series | 3500 Series Machinery Protection System |
| Official Model | 3500/70M (Short Marking: 350070M) |
| Channel Quantity | 2 independent fully isolated seismic vibration input channels |
| Matching Sensor Type | Seismic velocity transducers, piezoelectric acceleration sensors, casing vibration sensors |
| Input Signal Type | Analog velocity vibration signal (mils/sec, mm/s) |
| Input Signal Range | ±10 VDC differential analog input |
| Measurable Vibration Velocity Range | 0 – 100 mm/s peak |
| Measurement Resolution | 0.01 mm/s |
| Frequency Response Bandwidth | 10 Hz – 1000 Hz (optimized for casing seismic vibration) |
| Alarm Configuration | Independent adjustable Alert 1, Alert 2 and Danger Trip limits per channel |
| Trip Mode | Configurable latching trip / non-latching trip |
| Signal Filter Type | Band-pass filtering, anti-aliasing filtering, noise suppression filtering |
| Power Supply | 24 VDC backplane power from 3500/15 power supply module |
| Maximum Current Consumption | 180 mA |
| Operating Temperature Range | -40 °C to +85 °C |
| Storage Temperature Range | -55 °C to +125 °C |
| Operating Humidity | 0% – 95% non-condensing |
| Mounting Mode | Standard half-slot insertion into 3500 system rack backplane |
| Hot-Swap Support | Fully hot-swappable, no system shutdown required for replacement |
| Signal Isolation | Complete galvanic isolation between input channels and system backplane |
| Fault Diagnosis | Automatic detection of sensor open circuit, cable short circuit, signal loss and transducer fault |
| EMC Performance | Compliant with EN 61000-6-2, EN 61000-6-4, high EMI/RFI immunity |
| Module Size | Standard 3500 half-slot dimension |
| Module Weight | 0.36 kg |
| Compliance Standards | API 670 4th Edition, CE, UL, CSA, IECEx |
| Origin | United States |
Core Functional Features
- Dual Independent Seismic Vibration Monitoring Channels
Two fully isolated channels realize redundant mutual verification monitoring of bearing housing and casing vibration; eliminates single-point failure risk and improves monitoring reliability.
- Professional Velocity Vibration Measurement Optimization
Specialized circuit for seismic velocity signal processing; accurately measures casing vibration velocity value, matches international vibration severity evaluation standards perfectly.
- Wide Band-Pass Filtering Performance
10–1000 Hz frequency band specially optimized for structural casing vibration; effectively filters low-frequency drift and high-frequency noise interference.
- Multi-Level Configurable Alarm & Trip Logic
Independent adjustable warning alarm, pre-danger alarm and emergency trip protection limits for each channel; supports flexible latching/non-latching trip mode configuration.
- Complete Real-Time Self-Diagnosis Function
Automatic detection of sensor disconnection, cable short circuit, signal loss and transducer abnormality; immediately uploads fault status to system and upper monitoring platform.
- Full Galvanic Isolation Design
Electrical isolation between sensor input, module circuit and system backplane; isolates industrial electromagnetic interference and ensures long-term stable signal output.
- Hot-Swappable & Fully Interchangeable Structure
Standard 3500 half-slot plug-and-play hot-swappable design; fully compatible with all 3500 system racks and backplanes, no field recalibration required for replacement.
- Perfect System Integration Compatibility
Seamlessly matches 3500/15 power modules, 3500/33 Keyphasor modules, 3500/22 shaft vibration modules, 3500/62 thrust modules and system display/relay modules.
Typical Application Scenarios
- Power Generation Industry
Bearing housing casing vibration velocity monitoring and protection for steam turbines, gas turbines, turbo generators and boiler feed water pumps; evaluates overall equipment vibration severity status.
- Oil & Gas Industry
Casing vibration monitoring for natural gas compressors, pipeline booster units and refinery rotating equipment; suitable for flammable and explosive hazardous industrial areas.
- Petrochemical & Chemical Industry
Bearing housing vibration velocity monitoring for centrifugal pumps, process compressors, large fans and mixers; diagnoses bearing damage, casing looseness and foundation resonance faults.
- Metallurgy & Cement Industry
Casing vibration monitoring for rotary kilns, rolling mills, heavy crushers and induced draft fans under high-temperature and strong-vibration harsh environments.
- Heavy Manufacturing & General Industry
Continuous 24/7 seismic vibration monitoring for large motor units, fans, pumps and rotary processing equipment; realizes predictive maintenance and safety interlock protection.
System Matching & Reliability Information
- Matching devices: Seismic velocity transducers, acceleration sensors, 3500 system racks/backplanes, 3500/15 power modules, 3500/22 shaft vibration modules, 3500/33 Keyphasor modules, 3500/62 thrust modules.
- Warranty period: 12 months for brand new original factory sealed products.
- Product status: Original brand new, in stock, available for global delivery.
- Installation requirement: Installed in dedicated seismic vibration slot of 3500 system rack; supports dual redundant module configuration for high-reliability projects.
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